公开(公告)号：US20190382532A1

公开(公告)日：2019-12-19

申请号：US16347410

申请日：2017-11-03

Applicant: PRC-DeSoto International, Inc.

Inventor： WEIBIN CUI ,  RENHE LIN

IPC: C08G75/045 ,  C09K3/10 ,  C09D181/02

Abstract: Sulfur-containing poly(alkenyl) ethers can be incorporated into the backbone of polythioether prepolymers and can be used as curing agents in thiol-terminated polythioether prepolymer compositions. Cured sealants prepared using compositions containing sulfur-containing poly(alkenyl) ether-containing polythioether prepolymers and/or sulfur-containing poly(alkenyl) ether curing agents exhibit improved physical properties suitable for use in aerospace sealant applications.

公开(公告)号：US20180194979A1

公开(公告)日：2018-07-12

申请号：US15403623

申请日：2017-01-11

Applicant: PRC-DESOTO INTERNATIONAL, INC.

Inventor： WEIBIN CUI ,  RENHE LIN

IPC: C09J181/02 ,  C08G75/02

CPC classification number: C09J181/02 ,  C08G75/02 ,  C08G75/12

Abstract: Thiol-terminated polythioether compositions and sealants exhibit an extended working time and rapidly cure at room temperature at the end of the working time are disclosed. The compositions comprise a combination of pyridine catalysts.

公开(公告)号：US20200283663A1

公开(公告)日：2020-09-10

申请号：US16293831

申请日：2019-03-06

Applicant: PRC-DeSoto International, Inc.

Inventor： WEIBIN CUI ,  JUEXIAO CAI ,  RENHE LIN

IPC: C09K3/10 ,  C08G81/00 ,  C08L87/00 ,  B64G1/22

Abstract: Chemically resistant sealant compositions include high equivalent weight sulfur-containing prepolymers. Upon exposure to chemicals the properties of sealants prepared using the prepolymers exhibit excellent fuel and phosphate ester resistance.

公开(公告)号：US20170369737A1

公开(公告)日：2017-12-28

申请号：US15194607

申请日：2016-06-28

Applicant: PRC-DeSoto International, Inc.

Inventor： WEIBIN CUI ,  RENHE LIN

IPC: C09D181/02 ,  C08G18/67 ,  C08G18/75 ,  C08G75/045

CPC classification number: C09D181/02 ,  C08G18/6715 ,  C08G18/755 ,  C08G59/00 ,  C08G75/045 ,  C08G2190/00 ,  C08L81/02 ,  C09K3/1012 ,  C09K3/1021

Abstract: Urethane/urea-containing bis(alkenyl) ethers can be incorporated into the backbone of polythioether prepolymers and can be used as curing agents in thiol-terminated polythioether prepolymer compositions. Cured sealants prepared using compositions containing urethane/urea-containing bis(alkenyl) ether-containing polythioether prepolymers and/or urethane/urea-containing bis(alkenyl) ether curing agents exhibit improved physical properties suitable for use in aerospace sealant applications.

公开(公告)号：US20170369432A1

公开(公告)日：2017-12-28

申请号：US15194617

申请日：2016-06-28

Applicant: PRC-DeSoto International, Inc.

Inventor： WEIBIN CUI ,  RENHE LIN

IPC: C07C323/12 ,  C08G75/045 ,  C09K3/10

CPC classification number: C07C323/12 ,  C08G75/02 ,  C08G75/045 ,  C08G75/12 ,  C08G2190/00 ,  C09K3/1012 ,  C09K2003/1059

Abstract: Hydroxyl-containing bis(alkenyl) ethers can be incorporated into the backbone of polythioether prepolymers and can be used as curing agents in thiol-terminated polythioether prepolymer compositions. Cured sealants prepared using compositions containing hydroxyl-containing bis(alkenyl) ether-containing polythioether prepolymers and/or hydroxyl-containing bis(alkenyl) ether curing agents exhibit improved physical properties such as rapid curing and compatibility with fillers suitable for use in aerospace sealant applications.